For the first two years, grapevines are practically useless. They don't produce grapes and when they do, they're so goddamn ugly and horrid they're unsellable. It's very bad business to be a grapevine farmer for the first two years. By the third year, the grapes aren't sweet enough to eat but they're sweet enough to drink. So, they're sold to winemakers to be made into Merlot, Pinot Noir, Grenache or Cabernet Sauvignon. It's not until the fourth year, that grapevines become commercial and are sold as fruit that can be eaten. The grapes are juicy and beautiful and heavy and hang from the vines like something melting. If you're going to commit seriously to something, try and give yourself at least four years for that something to bear fruit.